package com.redisdemo.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


@Component
public class CacheContextUtil implements ApplicationContextAware {

    private static ApplicationContext commonApplicationContext;


    @Override
    public void setApplicationContext(ApplicationContext context) throws BeansException {
        this.commonApplicationContext = context;
    }


    /**
      * 根据提供的bean名称得到相应的服务类
      * @param beanId bean的id
      * @return 返回bean的实例对象
      */
        public static Object getBean(String beanId) {
        return commonApplicationContext.getBean(beanId);
    }


     /**
      * 根据提供的bean名称得到对应于指定类型的服务类
      * @param beanId bean的id
      * @param clazz bean的类类型
      * @return 返回的bean类型,若类型不匹配,将抛出异常
      */
      public static <T> T getBean(String beanId, Class<T> clazz) {
          return commonApplicationContext.getBean(beanId, clazz);
      }

}
